In a rope skipping competition, Xiaoli jumped 60 times in one minute, and the number of jumps per minute of Xiaoli was 20 times less than that of Xiaowen. How many jumps per minute did Xiaowen jump?

In a rope skipping competition, Xiaoli jumped 60 times in one minute, and the number of jumps per minute of Xiaoli was 20 times less than that of Xiaowen. How many jumps per minute did Xiaowen jump?

Xiaowen jumps (60 + 20) △ 2 = 40 times per minute